diff --git a/common b/common
index 5284cad0c7c8e41cfcf7a299437780e1eaa3619d..980f4165e3b771afc96141ea1dadb033d5a42320 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit 5284cad0c7c8e41cfcf7a299437780e1eaa3619d
+Subproject commit 980f4165e3b771afc96141ea1dadb033d5a42320
diff --git a/simulator/mainSimulator.m b/simulator/mainSimulator.m
index 04846a9b2c5fc84d5afa3da1170d9a54d73faa16..2294620f2820bb4d89577477e8ae4ce1793fd20e 100644
--- a/simulator/mainSimulator.m
+++ b/simulator/mainSimulator.m
@@ -89,4 +89,5 @@ toc(tStart)
 
 prints(ascent, descent, environment)
 if settings.simulator.plots, stdPlots(ascent, descent, rocket, environment, settings); end
+if settings.simulator.SMonly, designPlots(ascent, descent, rocket, environment, settings); end
 end
\ No newline at end of file
diff --git a/simulator/simulatorConfig.m b/simulator/simulatorConfig.m
index 977961b274431f6f25b9dfb1446337728b76cd4e..6a92c67fe2779c6b84f2e087d1768c8677ce5cc6 100644
--- a/simulator/simulatorConfig.m
+++ b/simulator/simulatorConfig.m
@@ -22,6 +22,7 @@ simulator.unitTest = true;
 
 % NOTE: airbrakes enable flag is set in rocketConfig
 %% PLOTS
-simulator.plots = true;             % True to plot data after simulation
+simulator.plots = false;             % True to plot data after simulation
 simulator.landingMap = true;        % True to run geoplots
-simulator.satellite3D = false;      % True to plot trajectory on 3D map
\ No newline at end of file
+simulator.satellite3D = false;      % True to plot trajectory on 3D map
+simulator.SMonly = true;            % True to plot only SM (useful during design!)
\ No newline at end of file
diff --git a/simulator/src/designPlots.m b/simulator/src/designPlots.m
new file mode 100644
index 0000000000000000000000000000000000000000..68c77c787544d00ff1d860c19dc568e1115ed8d0
--- /dev/null
+++ b/simulator/src/designPlots.m
@@ -0,0 +1,22 @@
+function designPlots(ascent, descent, rocket, environment, settings)
+arguments
+    ascent      struct
+    descent     struct
+    rocket      Rocket
+    environment Environment
+    settings    Settings
+end
+
+tAscent = ascent.state.time;
+
+%%% Stability Margin
+figure('Name','Stability Margins - ascent Phase','NumberTitle','off');
+plot(tAscent, -ascent.coeff.XCPlon, '.',...
+    tAscent, -ascent.coeff.XCPlat, '.',...
+    tAscent, ascent.coeff.XCPtot, '.');
+
+title('Stability margin vs time'), grid on;
+legend('Longitudinal', 'Lateral', 'Total')
+xlabel('Time (s)'); ylabel('S.M.(/)')
+ylim([0 6.5])
+end
\ No newline at end of file